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a mass m 100g is released from rest from 10m above the horizontal level the diameter of the circular disk is 40cm
a runner in a race takes 27 seconds to go from the 40 meter mark to the 70 meter marka what is the runners speed in msb
a tungsten wire is 150m long and has a diameter of 100 mm at 20 degrees celsius a current of 50ma flows through the
a photon with a wavelength of 590e-11 m is scattered by a loosely bound electron in a metallic target and exits at an
the bucket of mass 25 kg is released from rest from 40 m above the water level the diameter of the cylinder is 40cm
a wheel initially rotates at 20 rads and decelerates at a rate of 10 rads2a how long does it take to come to stopb what
a assume that air pressure is 100 atm and the air temperature is 23o c if the abolute zero apparatus is open to the air
a nitrogen molecule is initially in a large volume of calm air at stpa how many collisions does the nitrogen molecule
electrons with a speed of 16times106ms pass through a double-slit apparatus interference fringes are detected with a
a if an electron makes a transition from the n 6 bohr orbit to the n 2 orbit determine the wavelength of the photon
a beam of light passes through a polarizer and then an analyzer in this process the intensity of the light transmitted
an astronaut is traveling in a space vehicle that has a speed of 0480c relative to earth the astronaut measures his
an automobile of mass 1500 kg and a truck of 3500 kg collide at an intersection just before the collision the
the spring constant of a spring is 1260 nm a body is suspended from the spring causing it to stretch 70 cm what is the
a laser beam takes 519 ms to be reflected back from a totally reflecting sail on a spacecraft how far away is the
two polarizers are out of alignment by 221deg if light of intensity 100 wm2 and initially polarized halfway between the
a golf ball leaves the tee at an angle of 42deg from the horizontal and strikes the ground 240 yd down range on a level
the nucleus of an atom of radium mass 377 x 10-25 kg suddenly ejects an alpha particle mass 668 x 10-27 kg of an energy
the helium atom has a volume of about 3x10-30 m3 what fraction of a volume of helium gas at stp is actually occupied by
a series ac circuit contains a 270-rm omega resistor a 100-rm mh inductor a 410-rm mu rmrm f capacitor and an ac power
a 100-cm-high object is placed 470 cm to the left of a converging lens of focal length 760 cm a diverging lens of focal
consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus how much energy is
a drug prepared for a patient is tagged with which has a half life of 605 h and an activity of 160 microci when it was
at what height above the earth is the free-fall acceleration 20 of its value at the surfacewhat is the speed of a
glycerine in water diffuses along a horizontal column that has a cross-sectional area of 20 cm2 the concentration